Question: When did Britney Spears and Jason Allen Alexander get married?
Paraphrase: What was the date of Britney Spears' and Jason Allen Alexander's wedding?
SPARQL (Wikidata): SELECT ?value WHERE { wd:Q11975 p:P26 ?s . ?s ps:P26 wd:Q27949402 . ?s pq:P580 ?value}